동향

Gas generation and migration in radioactive waste disposal


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* Workshop Proceedings(Reims, France)

< Summary of Working Group Reports >


1. Chemical Effects for repositories for high-level waste and spent fuel(Working Group A)
2. Chemical effects for repositories for intermediate-level waste(Working Group B)
3. Gas migration through bentonite and natural clays (Working Group C)
4. Overpressurisation and its consequences (Working Group D)
5. Gas effects on contaminant migration and groundwater flow in the geosphere(Working Group E)


Session Ⅰ: Presentation of the EC/NEA gas status report
ㅇ Introduction to the EC/NEA status report : "Gas migration and two-phase flow through engineered and geological barriers for a deep repository for radioactive waste"
ㅇ Gas generation
ㅇ Gas migration ghrough bentonitic engineered barrier systems and through non-indurated clays
ㅇ Gas migration through indurated clays (Mudrocks)
ㅇ Gas migration ghrough crystalline rocks
ㅇ Gas migration through salt rocks
ㅇ The EC/NEA status report

Session Ⅱ: Present approaches to dealing with gas-related issues in performance asessment exercises

ㅇ The gas pathway in a site-specific performance assessment : Nirex 97
ㅇ The treatment of gas in the SR 97 performance assessment for a spent-fuel repository in the Swedish crystalline basement
ㅇ The treatment of gas in the H12 performance assessment for HLW disposal in japan
ㅇ Treatment of two-phase flow in repository performance assessment at Yucca Mountain
ㅇ The treatment of gas in the performance assessment for the disposal of HLW and MLW in Boom clay

Session Ⅲ: Regulatory point of view and expectations

ㅇ Gas generation in high level waste geological disposal : Elements for integration in a safety strategy
ㅇ Licensing oriented scoping analyses of gas and nuclide transport in underground repositories

Session Ⅳ: Planned strategies for dealing with gas-related issues

ㅇ ANDRA's strategy for the treatment of gas-related issues
ㅇ NAGRA strategy for the treatment of gas-related issues for disposal of long-lived waste and low and intermediate level waste in sedimentary Host Rocks
ㅇ GRS/ISTec strategy for the treatment of gas-related issues for repositories located in rock salt
ㅇ ENRESA strategy for the treatment of gas-related issues for HLW repositories sited in granitic and argillaceous settings

Sessiong Ⅴ: In-depth discussion by working groups

ㅇ Gas flow anomalies in natural and engineered barriers
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